Thao,
here is what I see for hcidbdump
I do not see R flag in there.
If not given, tar is written to $DBFPATH/cldb.tar
output_file = Name of file in which to write messages
If not given, message data is written to stdout
-B = Perform database backup
-U userid = User ID to use for database access
-M map = Apply map using msgmapdata command to each message
-r = Save message from recovery database
-e = Save messages from error database
-c = Display context from error database
-a = append data to output file
-b = dump in binary (length-encoded) format
-D = delete messages after processing
-l = Long form output (ignored when Output_file given)
-L = Ultra Long form output (overrides -l)
-O time = Order by ascending date
i = inbound arrival time
o = outbound time
r = recovery time
x = xlate start time
-v = verbose operation
-d dest = select messages with specified destination
-f source = select messages with specified source
-o owner = select messages with specified owner
-s state = select messages with specified state
-S time = select messages at or after specified date/time
-E time = select messages at or before specified date/time
-t type = select messages with specified type
D = Data
R = Reply
U = Unknown
-m mid = select message with specified mid(s)
x.y.z = only this message
x.y.z1:x.y.z2 = x.y messages z1 through z2
-m overrides all other restrictions
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